From da02cf36b7265693bef7d982c6d46b372ed53693 Mon Sep 17 00:00:00 2001
From: chen <15335560115@163.com>
Date: 星期三, 21 五月 2025 18:16:14 +0800
Subject: [PATCH] 将网关读取标签配置和修改标签配置调通，但下发修改配置只能改组id其他能改但不能保存，掉电后会初始化问题未解决
---
keil/include/src/Radio/crc.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/keil/include/src/Radio/crc.c b/keil/include/src/Radio/crc.c
new file mode 100644
index 0000000..68ed1c9
--- /dev/null
+++ b/keil/include/src/Radio/crc.c
@@ -0,0 +1,47 @@
+#include "crc.h"
+
+
+uint16_t ComputeCrc( uint16_t crc, uint8_t dataByte, uint16_t polynomial )
+{
+ uint8_t i;
+
+ for( i = 0; i < 8; i++ )
+ {
+ if( ( ( ( crc & 0x8000 ) >> 8 ) ^ ( dataByte & 0x80 ) ) != 0 )
+ {
+ crc <<= 1; // shift left once
+ crc ^= polynomial; // XOR with polynomial
+ }
+ else
+ {
+ crc <<= 1; // shift left once
+ }
+ dataByte <<= 1; // Next data bit
+ }
+ return crc;
+}
+
+
+uint16_t RadioComputeCRC( uint8_t *buffer, uint8_t length, uint8_t crcType )
+{
+ uint8_t i = 0;
+ uint16_t crc = 0;
+ uint16_t polynomial = 0;
+
+ polynomial = ( crcType == CRC_TYPE_IBM ) ? POLYNOMIAL_IBM : POLYNOMIAL_CCITT;
+ crc = ( crcType == CRC_TYPE_IBM ) ? CRC_IBM_SEED : CRC_CCITT_SEED;
+ for( i = 0; i < length; i++ )
+ {
+ crc = ComputeCrc( crc, buffer[i], polynomial );
+ }
+ if( crcType == CRC_TYPE_IBM )
+ {
+ return crc;
+ }
+ else
+ {
+ return( ( uint16_t ) ( ~crc ));
+ }
+}
+
+
--
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